body {-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: grayscale;overflow-x:hidden;}
:focus {outline: none;}
img {max-width:100%;}
#back-to-top-button {display: inline-block;background-color: #333;width: 50px;height: 50px;text-align: center;border-radius: 4px;position: fixed;bottom: 30px;right: 30px;transition: background-color .3s, opacity .5s, visibility .5s;opacity: 0;visibility: hidden;z-index: 1000;}
#back-to-top-button::after {content: "^";font-family: sans-serif;font-weight:bold;font-size: 50px;line-height: 64px;color: #fff;}
#back-to-top-button:hover {cursor: pointer;background-color: #333;}
#back-to-top-button:active {background-color: #555;}
#back-to-top-button.show {opacity: 1;visibility: visible;}
@media screen and (max-width: 768px) {
	#back-to-top-button::after {font-size: 30px;line-height: 40px;}
	#back-to-top-button {width: 30px;height: 30px;bottom: 5px;right: 5px;}
}
.fixed-button {opacity:0.8;position: fixed;bottom: 10px;right: 10px;padding: 10px 20px;border-radius: 5px;cursor: pointer;transition: opacity 0.3s ease;z-index: 1000;}
.fixed-button:hover {opacity: 1;}